Edward, thus sanctioned, again advanced into Scotland in the summer of 1301, where he found tho country laid waste before him by the politic Scots, and was obliged to take up his quarters, on tho approach of winter, in Linlithgow, where he built a castle and kept his Christmas. Another truce was entered into the following spring, and the king then left John de Segrave as his lieutenant in Scotland, at the head of an army of 20,000 men. Early in the year 1303, the Scots having appointed John Comyn regent of the kingdom, ho, with Sir Simon Prazer, not contented with maintaining the independence of the northern parts, descended into the southern counties, which Edward imagined were wholly in his power. His general, John de Segrave, marched out to repulse them; and on the morning of the 21th of February, near Roslin, he came up with them. He had divided his army into three sections: the first division, being suddenly attacked by Comyn and Sir Simon Fraser, were speedily routed, and in their flight coming in contact with tho second division, throw that also into confusion, which, however, still made a stout resistance, but was eventually also routed, fell back on tho third division, and communicated its disorder to them; so that the whole force was completely put to flight, and pursued with heavy loss. The English commander himself was taken prisoner, being dangerously wounded in the very first encounter. Sixteen knights and thirty esquires were found amongst the captives, including the brother and son of the general. It is reported that the Scots were compelled to slaughter a great number of their prisoners, in order to engage with safety the successive bands that they came up with. They boasted of thus achieving three victories in one day. The éclat of this brilliant action turned the popular tide at once in their favour. The people everywhere came forward to assist them. The regent very soon made himself master if all the fortresses in the south, and once more the country was lost to the English.
This sudden and complete prostration of all his ambitious hopes, and reversement of his victories, effectually aroused the martial king. He assembled a great army, supported by a formidable fleet; and by rapid marches, at the head of his hosts, he appeared before Roxburgh on the 21st of May, and reached Edinburgh on the 4th of June. His progress was marked by the most terrible devastation. He came upon the devoted country like a lion exasperated by wounds of tho hunters. No foe could be found able to resist him, and he ravaged tho open country, and laid in ruins the towns and villages, his fleet supplying his destroying forces with abundant provisions.
Having made a short pause in Edinburgh, to leave all secure there, he again advanced, with desolating speed and vengeance, through Linlithgow and Clackmannan to Perth, and thence to Aberdeen, and so on to Moray. He posted himself in the great and strong fortress of Lochendorb, situated on an island in the midst of a Morayshire loch; and there he remained till the autumn, employed in subduing and receiving the homage of tho great Highland chiefs. "Tradition," says Tytler, "still connects the ruins of Lochendorb, after the lapse of more than 500 years, with tho name of the great English king." On his return southward ho met with a stout resistance from the strong castle of Brechin, defended by Sir Thomas Maule, which was only compelled to open its gates to the conqueror after the death of its valiant commander. The victorious king took up his quarters for the winter at Dunfermline. He was careful this time not to withdraw to England, even during tho inactivity of the season, nor to trust the great charge of a kingdom's safety to any deputy. His soldiers are said to have amused themselves during this time in destroying the magnificent abbey of the Benedictines; "a building," says Matthew of Westminster, "so spacious, that three kings, with all their retinues, might have been conveniently lodged there." The remains of this noble abbey, including the parish church, still attest its original splendour; and the Scots regarded it with high veneration as the resting-places of no less than eight of their ancient kings, and five of their queens.
The last remains of the army of Scotland assembled to defend the castle of Stirling, that being the only stronghold which now remained in Scottish hands; but they were speedily dispersed by the English cavalry. Soon after this, Comyn, the regent and chief commander of the forces, came in and made his submission to the royal commissioners at Strathorde, in Fifeshire; and his example was followed by all the nobility. These, with a few exceptions, as Wishcart, Bishop of Glasgow, Sir John Foulis, the Steward, and a few others, were allowed to retain their lives and lands, subject only to such penalties and terms of banishment as the king might choose to impose. During Lent a Parliament was held at St. Andrews, when Sir William Wallace, Sir Simon Frazer, and the governor of Stirling, were summoned to surrender themselves on penalty of outlawry, if failing to appear. All these persons, not even excepting Frazer, accepted tho terms offered to them. The brave Sir William only refused to put himself into the power of the English king, except on a written assurance of life and estate, signed and sealed by the monarch himself; and his caution was at once justified by the event, for the king, on hearing this, cursed Wallace and all who supported him, and set a reward of 300 marks upon his head. The brave patriot had for a time escaped from the snare, and once more retreated to his hiding-places in the forest of Dunfermline.
Edward now turned his whole attention to the reduction of the castle of Stirling. This royal fortress, placed like an eagle's eyrie on its precipitous rook, was defended by one of the most stout-hearted men of Scotland, Sir William Oliphant, with the insignificant garrison of 140 men; yet, for about three months, that is, from the 22ud of April to the 20th of July, did they withstand the whole force of the English king. Edward directed all the operations against it in person, and brought a number of engines which throw immense stones and darts upon it. He sent to England to collect all kinds of missiles, which were discharged against the place; but it was not yielded till the garrison was reduced to the extremity of famine, and the building to a mass of ruins. They were then compelled to surrender at discretion, for the ruthless conqueror would grant no other terms; and the brave defenders wore obliged to solicit pardon and their lives on their knees—all circumstances of great humiliation. Their lives were given them, but they were sent to the Tower of London and other dungeons. On marching out, it was found that thirteen ladies, wives and sisters of the gallant officers, had shared the perils and hardships of the siege.